Mikaeus, the Unhallowed, Krark-Clan Ironworks, and Chainbreaker

Prerequisites

• Mikaeus, the Unhallowed on the battlefield
• Krark-Clan Ironworks on the battlefield
• Chainbreaker on the battlefield

Steps

1. Activate Krark-Clan Ironworks by sacrificing Chainbreaker
2. When Chainbreaker dies, its undying ability triggers, returning it from your graveyard to the battlefield without a +1/+1 counter on it due to its replacement effect
3. Repeat

Results

• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers